<html>
  <head><style>
    select          { visibility: hidden; }
    select.unthemed { -moz-appearance: none; margin: 2px 0 2px 0}
  </style></head>
  <body>
    <div style="background: lightblue">
      <select class="unthemed"></select>
    </div>
  </body>
</html>
